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users.go
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/
users.go
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package identityservice
import (
"fmt"
"strconv"
)
type Users struct {
nextUserId int
nextTenantId int
users map[string]UserInfo
tenants map[string]string
}
func (u *Users) addTenant(tenant string) (string, string) {
if tenant == "" {
return "", ""
}
for id, tenantName := range u.tenants {
if tenant == tenantName {
return id, tenantName
}
}
u.nextTenantId++
id := strconv.Itoa(u.nextTenantId)
u.tenants[id] = tenant
return id, tenant
}
func (u *Users) AddUser(user, secret, tenant, authDomain string) *UserInfo {
tenantId, tenantName := u.addTenant(tenant)
u.nextUserId++
userInfo := &UserInfo{
secret: secret,
Id: strconv.Itoa(u.nextUserId),
TenantId: tenantId,
TenantName: tenantName,
authDomain: authDomain,
}
u.users[user] = *userInfo
userInfo, _ = u.authenticate(user, secret, authDomain)
return userInfo
}
func (u *Users) FindUser(token string) (*UserInfo, error) {
for _, userInfo := range u.users {
if userInfo.Token == token {
return &userInfo, nil
}
}
return nil, fmt.Errorf("No user with token %v exists", token)
}
// ClearToken removes the token associated with the given user so that
// any further uses of that token will be unauthorized.
func (u *Users) ClearToken(user string) error {
ui, ok := u.users[user]
if !ok {
return fmt.Errorf("user %q does not exist", user)
}
ui.Token = ""
u.users[user] = ui
return nil
}
const (
notAuthorized = "The request you have made requires authentication."
invalidUser = "Invalid user / password"
)
func (u *Users) authenticate(username, password, domain string) (*UserInfo, string) {
userInfo, ok := u.users[username]
if !ok {
return nil, notAuthorized
}
if domain != "" && domain != userInfo.authDomain {
return nil, invalidUser
}
if userInfo.secret != password {
return nil, invalidUser
}
if userInfo.Token == "" {
userInfo.Token = randomHexToken()
u.users[username] = userInfo
}
return &userInfo, ""
}